Roll src/third_party/libFuzzer/src/ d62662686..9dfdc2758 (2 commits)

https://chromium.googlesource.com/chromium/llvm-project/compiler-rt/lib/fuzzer.git/+log/d62662686b22..9dfdc2758f26

$ git log d62662686..9dfdc2758 --date=short --no-merges --format='%ad %ae %s'
2018-08-02 dor1s [libFuzzer] Initial implementation of weighted mutation leveraging during runtime.
2018-08-02 kcc [libFuzzer] use absolute distance in addition to the hamming distance in value profiling; our A/B testing have (somewhat weak) indication that this provides an additional signal for corpus expansion

Created with:
  roll-dep src/third_party/libFuzzer/src

Bug: 854277
Change-Id: If7b083d5b3d983d7b8a2fe139a0f8a7494fea559
Reviewed-on: https://chromium-review.googlesource.com/1162074Reviewed-by: Jonathan Metzman <metzman@chromium.org>
Commit-Queue: Max Moroz <mmoroz@chromium.org>
Cr-Commit-Position: refs/heads/master@{#580574}

DEPS

@@ -169,7 +169,7 @@ vars = {
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling libFuzzer
   # and whatever else without interference from each other.
-  'libfuzzer_revision': 'd62662686b220de9364f9104621a2616605c3673',
+  'libfuzzer_revision': '9dfdc2758f261f1900cabed6fe13e3c044ad47d7',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling devtools-node-modules
   # and whatever else without interference from each other.